Measuring the NuMI Beam Flux for MINERvA

MINERvA is employing multiple tools to understand its neutrino beam flux. We utilize external hadron production data, but we also depend heavily on in situ techniques in which we reduce our hadron production uncertainties by tuning our Monte Carlo to both MINERvA detector data and muon monitor data.Comment: NuInt 2011 conference proceeding, 6 pages, 4 figure

I Wonder Why You Don\u27t Say Yes

https://digitalcommons.library.umaine.edu/mmb-vp/3519/thumbnail.jp

It\u27s Delightful to be Married!

https://digitalcommons.library.umaine.edu/mmb-vp/3228/thumbnail.jp

Onset of mechanical stability in random packings of frictional spheres

Using sedimentation to obtain precisely controlled packings of noncohesive spheres, we find that the volume fraction $\phi_{\rm RLP}$ of the loosest mechanically stable packing is in an operational sense well defined by a limit process. This random loose packing volume fraction decreases with decreasing pressure $p$ and increasing interparticle friction coefficient $\mu$. Using X-ray tomography to correct for a container boundary effect that depends on particle size, we find for rough particles in the limit $p \to 0$ a new lower bound, $\phi_{\rm RLP} = 0.550 \pm 0.001$.Comment: significantly revised, published versio

Commercial Insurance Coverage Decline Associated with Affordable Care Act: What's Next?

BACKGROUND: A key feature of the Affordable Care Act was the establishment of insurance exchanges and subsidies to assist Americans in obtaining affordable commercial insurance. This study was undertaken to determine whether this effort has met its goal. METHODS: A review of all patients requiring surgery for maxillofacial trauma at a level 1 trauma center was undertaken for time periods before the Affordable Care Act was passed (2008 and 2009), while partially in effect (2012), and after the establishment exchanges and subsidies (2014). Insurance statuses were recorded and rates of commercial insurance coverage during each period were compared. RESULTS: A total of 1,123 patients were included. Of these, 511 were treated before passage of the Affordable Care Act, 288 were treated in 2012, and 324 were treated in 2014. Before passage, 50.5% of patients had commercial insurance. This number was virtually unchanged in 2012. However, after the insurance exchanges and subsidies were established, the percentage of patients with commercial insurance fell to 36.73% (p = 0.004). CONCLUSIONS: Surprisingly, the establishment of insurance exchanges and subsidies through the Affordable Care Act was associated with a decline in rates of commercial insurance coverage. Trends in reimbursement patterns will need to be followed if the law is repealed and replaced

Concert recording 2022-04-29b

[Track 1]. PC / John Colton -- [Track 2]. Falling grace / Steve Swallow -- [Track 3]. Goodbye pork pie hat / Charles Mingus -- [Track 4]. My favorite things / Richard Rodgers -- [Track 5]. A child is born / Thad Jones -- [Track 6]. Wonderful slippery thing / Guthrie Govan

Concert recording 2022-04-29b

[Track 1]. PC / John Colton -- [Track 2]. Falling grace / Steve Swallow -- [Track 3]. Goodbye pork pie hat / Charles Mingus -- [Track 4]. My favorite things / Richard Rodgers -- [Track 5]. A child is born / Thad Jones -- [Track 6]. Wonderful slippery thing / Guthrie Govan

Implications of 3D Seismic Raytracing on Focal Mechanism Determination

The purpose of this study is to investigate apparent first‐motion polarities mismatch at teleseismic distances in the determination of focal mechanism. We implement and compare four seismic raytracing algorithms to compute ray paths and travel times in 1D and 3D velocity models. We use the raytracing algorithms to calculate the takeoff angles from the hypocenter of the 24 August 2016 Mw 6.8 Chauk earthquake (depth 90 km) in central Myanmar to the stations BFO, GRFO, KONO, and ESK in Europe using a 3D velocity model of the upper mantle below Asia. The differences in the azimuthal angles calculated in the 1D and 3D velocity models are considerable and have a maximum value of 19.6°. Using the takeoff angles for the 3D velocity model, we are able to resolve an apparent polarity mismatch where these stations move from the dilatational to the compressional quadrant. The polarities of synthetic waveforms change accordingly when we take the takeoff angles corresponding to the 3D model into account. This method has the potential to improve the focal mechanism solutions, especially for historical earthquakes where limited waveform data are available.acceptedVersio